Johnson remained active in both California and New York, and is well known for his statues honoring American soldiers of World War I, known as doughboys. Examples of these doughboy statues can be found in DeWitt Clinton Park[6] and
Doughboy Park[7] in New York City, the latter being named the best war memorial of its kind by the American Federation of Artists in 1928.[7]
Garfield Park in Pomona, California has another World War I tribute created by Johnson, dedicated in 1923, with an allegorical representation of Pomona, the Goddess of Fruit, beside a young man.[8]The Children's Tribute to the World War Heroes (1919) in Robert Keller Park in Huntington Park, California, depicts a barefoot girl holding the uniform caps of a sailor and a doughboy to her heart.[9]

Among his earlier works is The Spirit of Spanish Music, a fountain with the
bronze figure of a boy playing a flute, located in Lebus Court of the Mabel Shaw Bridges Hall of Music at Pomona College.[10][11] His allegorical figures of Architecture and Sculpture decorate the exterior of the 1927 Fine Arts Building (Los Angeles), with additional reliefs near the top of the building's façade. The inside lobby has a fountain with sculptures of children, modeled by his daughter, Cynthia (age 3) and his son Harvey (age 5).[12] That son, Harvey W. Johnson (1921-2005), was a prominent Western artist and became President of the Cowboy Artists of America.[13][14]
In addition, Johnson's grandson's Casey Schwarz [15] and Scott Lee Johnson
continue the family involvement in sculpture.

In 1918, Johnson was a leading candidate to execute a memorial to
community leader and publisher of the Los Angeles Times, Gen. Harrison Gray Otis,.
who had died the year before.
The Los Angeles Evening Herald called him a "100 per cent American sculptor", and
pictured him "putting the finishing touches" on his model
for the memorial in a story announcing that the project would be delayed until after
the conclusion of the World War, since the amount of bronze needed to complete the work
"would be sufficient to construct two cannon".[16]
The project ultimately was awarded to Russian sculptor Prince Paul Troubetzkoy[17]

For his final project, the façade and lobby sculptures of the
Los Angeles Fine Arts Building, Johnson's
sister, Annetta Johnson Saint-Gaudens, and her son Paul St Gaudens, both sculptors
themselves, provided assistance,[18] as did Santa Monica, California sculptor Merrell Gage.[2]
In his final years, feeling he wanted to work on something creative and not concentrate
just on sculpture, Johnson wrote a novel about an artist's life in Greenwich Village, New York City.[19]
Burt Johnson died in Claremont, California on 27 March 1927 at the age of 36.